package com.litianyi.blog.service.impl;

import com.litianyi.blog.entity.UserFriends;
import com.litianyi.blog.dao.UserFriendsDao;
import com.litianyi.blog.service.UserFriendsService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

/**
 * (UserFriends)表服务实现类
 *
 * @author makejava
 * @since 2020-05-13 21:39:20
 */
@Service("userFriendsService")
public class UserFriendsServiceImpl implements UserFriendsService {
    @Resource
    private UserFriendsDao userFriendsDao;

    /**
     * 通过ID查询单条数据
     *
     * @param id 主键
     * @return 实例对象
     */
    @Override
    public UserFriends queryById(Long id) {
        return this.userFriendsDao.queryById(id);
    }

    /**
     * 查询多条数据
     *
     * @param offset 查询起始位置
     * @param limit 查询条数
     * @return 对象列表
     */
    @Override
    public List<UserFriends> queryAllByLimit(int offset, int limit) {
        return this.userFriendsDao.queryAllByLimit(offset, limit);
    }

    /**
     * 新增数据
     *
     * @param userFriends 实例对象
     * @return 实例对象
     */
    @Override
    public UserFriends insert(UserFriends userFriends) {
        this.userFriendsDao.insert(userFriends);
        return userFriends;
    }

    /**
     * 修改数据
     *
     * @param userFriends 实例对象
     * @return 实例对象
     */
    @Override
    public UserFriends update(UserFriends userFriends) {
        this.userFriendsDao.update(userFriends);
        return this.queryById(userFriends.getId());
    }

    /**
     * 通过主键删除数据
     *
     * @param id 主键
     * @return 是否成功
     */
    @Override
    public boolean deleteById(Long id) {
        return this.userFriendsDao.deleteById(id) > 0;
    }
}